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Finding the Fourth Proportional to 3,407.75, 4,700.77 and 2,146.64

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Solution

The fourth proportional to 3,407.75, 4,700.77 and 2,146.64 is: 2,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.75 : 4,700.77 = 2,146.64 : x
  2. Step 2: Convert to fraction form
    3,407.75/4,700.77 = 2,146.64/x
  3. Step 3: Cross multiply
    3,407.75x = 4,700.77 × 2,146.64
  4. Step 4: Simplify right side
    3,407.75x = 10,090,860.91
  5. Step 5: Solve for x
    x = 10,090,860.91/3,407.75
  6. Step 6: Final answer
    x = 2,961.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.